4.             It is not always easy for the public to see to human life.(use)

對(duì)于公眾來(lái)說(shuō)，看到一項(xiàng)新發(fā)明對(duì)人們的生活有什么用途并不總是很容易的。

4. what use a new invention can be of考查be of+名詞和賓語(yǔ)從句的用法。be of+名詞結(jié)構(gòu)中的名詞是抽象名詞時(shí)，相當(dāng)于其中名詞所對(duì)應(yīng)的形容詞的意思，說(shuō)明被修飾詞具有某種特征或?qū)傩�。常用的名詞有use, importance, help,value , interest, quality,service, benefit, necessity等。"有什么用途"應(yīng)該用what引導(dǎo)賓語(yǔ)從句，what作定語(yǔ)。

題目來(lái)源：高考丟分題英語(yǔ) > Unit 4 Pygmalion

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